// SPDX-License-Identifier: GPL-2.0
/*
* TI j721e Cadence MHDP8546 DP wrapper
*
* Copyright (C) 2020 Texas Instruments Incorporated - http://www.ti.com/
* Author: Jyri Sarha <jsarha@ti.com>
*/
#include <linux/io.h>
#include <linux/platform_device.h>
#include "cdns-mhdp8546-j721e.h"
#define REVISION 0x00
#define DPTX_IPCFG 0x04
#define ECC_MEM_CFG 0x08
#define DPTX_DSC_CFG 0x0c
#define DPTX_SRC_CFG 0x10
#define DPTX_VIF_SECURE_MODE_CFG 0x14
#define DPTX_VIF_CONN_STATUS 0x18
#define PHY_CLK_STATUS 0x1c
#define DPTX_SRC_AIF_EN BIT(16)
#define DPTX_SRC_VIF_3_IN30B BIT(11)
#define DPTX_SRC_VIF_2_IN30B BIT(10)
#define DPTX_SRC_VIF_1_IN30B BIT(9)
#define DPTX_SRC_VIF_0_IN30B BIT(8)
#define DPTX_SRC_VIF_3_SEL_DPI5 BIT(7)
#define DPTX_SRC_VIF_3_SEL_DPI3 0
#define DPTX_SRC_VIF_2_SEL_DPI4 BIT(6)
#define DPTX_SRC_VIF_2_SEL_DPI2 0
#define DPTX_SRC_VIF_1_SEL_DPI3 BIT(5)
#define DPTX_SRC_VIF_1_SEL_DPI1 0
#define DPTX_SRC_VIF_0_SEL_DPI2 BIT(4)
#define DPTX_SRC_VIF_0_SEL_DPI0 0
#define DPTX_SRC_VIF_3_EN BIT(3)
#define DPTX_SRC_VIF_2_EN BIT(2)
#define DPTX_SRC_VIF_1_EN BIT(1)
#define DPTX_SRC_VIF_0_EN BIT(0)
/* TODO turn DPTX_IPCFG fw_mem_clk_en at pm_runtime_suspend. */
static int cdns_mhdp_j721e_init(
struct cdns_mhdp_device *mhdp)
{
struct platform_device *pdev = to_platform_device(mhdp->dev);
mhdp->j721e_regs = devm_platform_ioremap_resource(pdev, 1);
return PTR_ERR_OR_ZERO(mhdp->j721e_regs);
}
static void cdns_mhdp_j721e_enable(
struct cdns_mhdp_device *mhdp)
{
/*
* Enable VIF_0 and select DPI2 as its input. DSS0 DPI0 is connected
* to eDP DPI2. This is the only supported SST configuration on
* J721E.
*/
writel(DPTX_SRC_VIF_0_EN | DPTX_SRC_VIF_0_SEL_DPI2,
mhdp->j721e_regs + DPTX_SRC_CFG);
}
static void cdns_mhdp_j721e_disable(
struct cdns_mhdp_device *mhdp)
{
/* Put everything to defaults */
writel(0, mhdp->j721e_regs + DPTX_DSC_CFG);
}
const struct mhdp_platform_ops mhdp_ti_j721e_ops = {
.init = cdns_mhdp_j721e_init,
.enable = cdns_mhdp_j721e_enable,
.disable = cdns_mhdp_j721e_disable,
};
const u32
mhdp_ti_j721e_bridge_input_bus_flags = DRM_BUS_FLAG_PIXDATA_SAMPLE_NEGEDGE |
DRM_BUS_FLAG_SYNC_SAMPLE_NEGEDGE |
DRM_BUS_FLAG_DE_HIGH;
